package top.code.common.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import top.code.user.entity.User;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Created by setsun on 2017/9/22.
 *
 *
 */
public class SessionInterceptor implements HandlerInterceptor{
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String uri = request.getRequestURI();    //获得请求路径
        if(uri.indexOf("login")>=0 || (uri.indexOf("sign")>=0)){
            return true;
        }

        HttpSession session = request.getSession();
        User user = (User) session.getAttribute("userinfo");
        if (user != null) {
            return true;
        }else {
            //转发登陆页面
            request.getRequestDispatcher("login").forward(request,response);
        }
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}
